.ub_img
{
	-webkit-background-size:contain;
	background-size:contain;
	background-repeat:no-repeat;
	background-position:center;
}
.ub_img_cover
{
	-webkit-background-size:cover;
	background-size:cover;
	background-repeat:no-repeat;
	background-position:center;
}
.ub_img100
{
	-webkit-background-size:100% 100%;
	background-size:100% 100%;
	background-repeat:no-repeat;
	background-position:center;
}

.im_yin1 {background-image:url('../img/yin1.jpg');}
.im_yin2 {background-image:url('../img/yin2.jpg');}
.im_yin3 {background-image:url('../img/yin3.jpg');}
.im_logo {background-image:url('../img/icon_logo.png');}
.im_back {background-image:url('../img/back.png');}
.im_back1 {background-image:url('../img/back1.png');}
.im_back_signup {background-image:url('../img/back_signup.png');}
.im_baby {background-image:url('../img/student.png');}
.im_teacher {background-image:url('../img/teacher.png');}
.im_icon_username{background-image:url('../img/icon_username.png');}
.im_icon_password{background-image:url('../img/icon_password.png');}
.im_set_bg{background-image:url('../img/set_bg.png');}
.im_set_icon1{background-image:url('../img/set_icon1.png');}
.im_set_icon2{background-image:url('../img/set_icon2.png');}
.im_set_icon3{background-image:url('../img/set_icon3.png');}
.im_set_icon4{background-image:url('../img/set_icon4.png');}


.im_config{background-image:url('../img/config.png');}
.im_bg_signup{background-image:url('../img/bg_signup.png');}
.im_tab0 {background-image:url('../img/icon-home.png');}
.im_tab1 {background-image:url('../img/icon-study.png');}
.im_tab2 {background-image:url('../img/icon-exam.png');}
.im_tab3 {background-image:url('../img/icon-setting.png');}
.selected .im_tab0 {background-image:url('../img/icon_index_selected.png');}
.selected .im_tab1 {background-image:url('../img/icon_study_selected.png');}
.selected .im_tab2 {background-image:url('../img/icon_exam_selected.png');}
.selected .im_tab3 {background-image:url('../img/icon_set_selected.png');}
.im_plus {background-image:url('../img/icon_plus.png');}
.im_cert {background-image:url('../img/icon_cert.png');}
.im_course {background-image:url('../img/icon_course.png');}
.im_forward {background-image:url('../img/icon_forward.png');}
.im_blueforward {background-image:url('../img/icon_blueforward.png');}
.im_book {background-image:url('../img/icon_book.png');}
.im_talk {background-image:url('../img/icon_talk.png');}
.im_play {background-image:url('../img/ico_play.png');}
.im_talk_ctn_right {background-image:url('../img/talk_ctn_right.png');}

.im_icon_pull{background-image:url('../img/icon_pull.png');}
.im_index_head_bg{background-image:url('../img/index_tab_bg.png');}
.im_index_foot_bg{background-image:url('../img/index_foot_bg.png');}
.im_tab_bg{background-image:url('../img/tab_bg.png');}
.im_tab_selected{background-image:url('../img/tab_selected.png');}
.im_szbg{background-image:url('../img/bg.png');}
.im_gywm{background-image:url('../img/ico_gywm.png');}
.im_xgmc{background-image:url('../img/ico_xgmc.png');}
.im_xgmm{background-image:url('../img/ico_xgmm.png');}
.im_xgtx{background-image:url('../img/ico_xgtx.png');}
.im_about{background-image:url('../img/abaut.png');}
.im_ico_{background:url('../img/ico_.png')81% center no-repeat; background-size: 1em 1em}
.im_bottom{background-image:url('../img/icon_bottom.png');}
.im_certbottom{background-image:url('../img/icon_certbottom.png');}
.im_fgx{background-image:url('../img/ico_fgx.png');}
.im_record_bg{background-image:url('../img/record_bg.png');}
.im_no_exam{background-image:url('../img/no_exam.png');}
.im_no_errorset{background-image:url('../img/no_errorset.png');}
.im_icon_learning{background-image:url('../img/icon_learning.png');}
.im_err{background-image:url('../img/ico_err.png');}
.im_right{background-image:url('../img/ico_right.png');}
.im_comment_default{background-image:url('../img/comment_default.png');}
.im_mess_default{background-image:url('../img/mess_default.png');}
.im_talk_right{background-image:url('../img/im_talk_right.png');}
.im_talk_left{background-image:url('../img/im_talk_left.png');}

.im_ico_hours{background-image:url('../img/ico_hours.png');}
.im_ico_teach{background-image:url('../img/ico_teach.png');}
.im_ico_origin{background-image:url('../img/ico_origin.png');}
.im_icon_plus{background-image:url('../img/icon_plus.png');}

.im_icon_kity_01{background-image:url('../img/icon_kity_01.png');}
.im_icon_kity_02{background-image:url('../img/icon_kity_02.png');}
.im_icon_kity_03{background-image:url('../img/icon_kity_03.png');}
.im_icon_kity_04{background-image:url('../img/icon_kity_04.png');}
.im_icon_kity_05{background-image:url('../img/icon_kity_05.png');}
.im_icon_kity_06{background-image:url('../img/icon_kity_06.png');}
.im_icon_kity_07{background-image:url('../img/icon_kity_07.png');}
.im_icon_kity_08{background-image:url('../img/icon_kity_08.png');}
.im_icon_kity_09{background-image:url('../img/icon_kity_09.png');}

.im_time { background-image: url('../img/time.png'); }